RA/DEC (2000)
02:05:25.285 -30:46:14.90
31.3553556955 -30.7708046928
Type
SN Ia
Redshift
0.073954
Discovery ReportClassification Report
Related AstroNotes: 2025-275
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-08-15 01:44:36.096
TNS AT
Y
Public
Y
Discovery Mag
18.434
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025txi - 2025-08-30 04:44:08 NOT / ALFOSC (GOTO)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-S_GOTO-4_L
 ▌ATLAS-STH_ATLAS-03_orange
 ▌PS1_GPC1_w
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
21916 2025-08-30 04:44:08 NOT / ALFOSC 1200 I. Worssam, M. Pursiainen I. Worssam, M. Pursiainen GOTO tns_2025txi_2025-08-30_04-44-08.038_NOT_ALFOSC_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-08-13 05:12:33 - 2025-08-13 05:12:33 2460900.71705 - 2460900.71705 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508912 2025-08-13 05:12:33 2460900.71705 18.45 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-S_GOTO-4 2025-07-24 16:10:41 - 2025-08-28 15:38:02 2460881.174084 - 2460916.151405 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
513933 2025-08-28 15:38:02 2460916.151405 19.1 0.14 ABMag L-GOTO GOTO-S_GOTO-4 135
513932 2025-07-24 16:10:41 2460881.174084 19.9 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2025-08-15 01:44:36 - 2025-08-15 01:44:36 2460902.57264 - 2460902.57264 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
508913 2025-08-15 01:44:36 2460902.57264 18.434 0.066 19.89 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 110 Robot
w-P1 PS1_GPC1 2025-08-19 13:59:16 - 2025-08-19 13:59:16 2460907.08282 - 2460907.08282 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
516452 2025-08-19 13:59:16 2460907.08282 18.59 0.02 22 ABMag w-P1 PS1_GPC1 45 Robot
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
269698 2025-09-11 10:56:09 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 02:05:25.285 -30:46:14.90 2025-08-19 13:59:15.648 18.59 w-P1 PSN PS25hjx Pan-STARRS N
268478 2025-08-29 19:29:06 GOTO_bot M. Pursiainen,J. Lyman,K. Ackley et al. GOTO GOTO 02:05:25.301 -30:46:15.80 2025-08-28 15:38:01.824 19.1 L-GOTO Other GOTO25gmz GOTO N
265895 2025-08-15 06:18:09 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 02:05:25.282 -30:46:15.08 2025-08-15 01:44:36.096 18.434 orange-ATLAS PSN ATLAS25jmc ATLAS 2025TNSTR3206....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21916 2025-08-30 09:58:44 Tom Killestein I. Worssam, M. Pursiainen, D. O'Neill, J. Lyman, T. Killestein, K. Ackley, M. Dyer, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, A. Kumar on behalf of GOTO collaboration GOTO SN Ia 0.073954 1 GOTO Good template matches obtained to SNe Ia around 1-2 weeks post-peak. Redshift corresponds to spectroscopic redshift of host galaxy, obtained via NED - also consistent with narrow host H and [S II] lines seen in spectrum. 2025TNSCR3461....1W
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
21916 2025-08-30 04:44:08 NOT / ALFOSC 1200 I. Worssam, M. Pursiainen I. Worssam, M. Pursiainen GOTO tns_2025txi_2025-08-30_04-44-08.038_NOT_ALFOSC_GOTO.dat Object

Comments

TNS
System

Thu, 09/11/2025 - 10:56

Object coordinates updated

Object coordinates updated according to AT-report 269698 of Group Pan-STARRS
Previous RA, DEC: 02:05:25.282, -30:46:15.08 (31.355342, -30.770856)
Updated RA, DEC: 02:05:25.285, -30:46:14.90 (31.3553556955, -30.7708046928)